﻿#region Copyright
// Copyright (c) 2011-2012 RaisingForce Team (Alikin Sergey)
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
#endregion

using System.Collections.Generic;
using System.Linq;
using RaisingForce.Raise.ObjectModel;

namespace RaisingForce.Raise.Presentation.ViewModel.Specialized
{
    sealed internal class InternalMeasureDictionary<T> :
        Dictionary<string, T>
        where T : IMeasure<double>
    {
        #region Constructors

        public InternalMeasureDictionary(params KeyValuePair<string, T>[] items)
        {
            if (items != null)
            {
                foreach (KeyValuePair<string, T> item in items)
                {
                    this.Add(item.Key, item.Value);
                }
            }
        }

        #endregion

        #region Public Methods

        public IEnumerable<T> GetReadOnlyValues()
        {
            return new ReadOnlyEnumerable<T>(this.Values);
        }

        public IEnumerable<string> GetReadOnlyKeys()
        {
            return new ReadOnlyEnumerable<string>(this.Keys);
        }

        public T GetValueOrDefault(string key)
        {
            return this.ContainsKey(key) ?
                this[key] :
                default(T);
        }

        public string GetKeyOrDefault(T value)
        {
            return this.ContainsValue(value) ?
                this.First(x => object.ReferenceEquals(x.Value, value)).Key :
                null;
        }

        #endregion
    }
}
